Mine detail: Cumberland Mine

Previously called 'Cumberland TunnelCumberland MillPatented Claims: Cumberland, MS 2376Judge Lamb, MS 2357Cumberland Basin area'

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Location

Lat / long:

37.44307, -108.00675

Resource(M)

Primary:	Silver, Gold
Tertiary:	Copper, Lead, Zinc
Ore:	Argentite, Chalcocite, Chalcopyrite, Galena, Gold, Proustite, Pyrargyrite, Pyrite, Sphalerite, Stephanite
Gangue:	Barite, Dickite, Quartz
Discovery year:	1878

Production

Operation type:	Underground
Deposit type:	Vein
Production size:	Small
Development status:	Past Producer
First production started:	1878
Last production ended:	1921

Geology

Host rock:	Cutler Formation;Dolores Formation
Host type:	Mudstone,Shale,Sandstone
Associated rock:	Porphyritic Rocks--Diorite-Monzonite Porphyry
Associated type:	Diorite
Structure:	San Juan Uplift, Four Corners Platform, La Plata Dome
Tectonic:	Central Cordillera (Southern Rocky Mtns)
Alteration processes:	Oxidation Of Cu Sulfides; Formation Of Clay

References

MRDS	D010813
MAS	80670068
DEP	10014161
Reference	{Deposit:: ECKEL, E.B., AND OTHERS, 1949, GEOLOGY AND ORE DEPOSITS OF THE LA PLATA DISTRICT, COLORADO: USGS PROF. PAPER 219, P. 73-74, 106-108, PL.18.}{Deposit:: BLM MINERAL SURVEYS MS 2376, 2357, 2378, 2379, 2380, 2381, 2382}{Deposit:: REED, J.R., 1936, REPORT ON THE CUMBERLAND MINE, CUMBERLAND BASIN, LA PLATA COUNTY, COLORADO: UNPUB. ENG. REPT., 2 P.}{Deposit:: Neubert and others, 1992, Mineral Appraisal of the San Juan National Forest, Colorado: USBM MLA 2-92, p. 111, fig. 39; p. 123-125.}{Deposit:: Southwestern Paydirt, no. 694, April 1997, 12.}{Production:: ECKEL AND OTHERS, 1949, P. 107 (AS COMPILED FROM DIRECTOR OF MINE REPTS., USGS/USBM RECORDS, AND PRIVATE UNPUB. ENGINEE * REPT.)}
Reporter	Wilson, Anna B., Buckingham, David A., Schwochow, Stephen D.